Assemble Full Stair Tread Sections

What happens here

Once the mitered corner sections are assembled, combine them with the longer composite decking boards (which also have pre-drilled pocket holes) to form complete L-shaped stair tread sections. Use clamps to hold the pieces tightly together, ensuring a flush and seamless joint. Drive pocket-hole screws through the pre-drilled holes to create secure and hidden connections. Repeat this process until all stair tread sections are fully assembled.

Goal: Combine corner and straight sections to form complete L-shaped stair treads